Visible-Light Photoredox Difluoromethylation of Phenols and Thiophenols with Commercially Available Difluorobromoacetic Acid
作者:Jinyan Yang、Min Jiang、Yunhe Jin、Haijun Yang、Hua Fu
DOI:10.1021/acs.orglett.7b01118
日期:2017.5.19
A simple and efficient visible-light photoredox one-pot method for difluoromethylation of phenols and thiophenols has been developed. The protocol uses commerciallyavailable, inexpensive, and easy handling difluorobromoacetic acid as the difluoromethylating agent, and the diverse O- and S-difluoromethylated products were prepared in good yields with tolerance of many functional groups.
Visible light-promoted difluoromethylthiolation of aryldiazonium salts
作者:Wengui Wang、Shuxiang Zhang、Huaiqing Zhao、Shoufeng Wang
DOI:10.1039/c8ob02431f
日期:——
Difluoromethylthiolation of aryldiazoniumsalts under photocatalytic conditions with a shelf-stable, easily prepared and inexpensive reagent, PhSO2SCF2H was described. A variety of difluoromethylthioethers were obtained utilizing aryldiazoniumsalts containing different functional groups. Aryldiazoniumsalts with a heteroarene moiety were tolerated. Fluorescence quenching experiments indicated that